@article{IVM_1993_9_a6,
     author = {A. G. Popov},
     title = {On the transformation of local solutions of equations associated with the geometry of surfaces},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {35--44},
     publisher = {mathdoc},
     number = {9},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1993_9_a6/}
}